Enitecnologie R&amp;D project on microalgae biofixation of CO2Outdoor comparative tests of biomass productivity using flue gas CO2 from a NGCC power plant

Pedroni, Paola Maria; Lamenti, Gioia; Prosperi, Giulio; Ritorto, Luciano; Scolla, Giuseppe; Capuano, Federico; Valdiserri, Mario

doi:10.1016/b978-008044704-9/50105-1

Cited by 13 publications

(6 citation statements)

References 4 publications

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“…Various algae, including high vitamin content algae, high CO 2 tolerance algae, high lipid content algae, etc., have been reported to be capable of fixing carbon dioxide (Hanagata et al 1992;Becker 1994;Graham and Wilcox 2000;Pedroni et al 2004;Aresta et al 2005;Rengel 2008). Usually, algae selection is based on the project purpose.…”

Section: Algae Strains Effectmentioning

confidence: 95%

“…It suggests that the two algae could be used to fix carbon dioxide of flue gas without complex pretreatment. A study on the fixation of the flue-gas carbon dioxide from a natural gas combined cycle power plant with Tetraselmis suecica cultivated in both the open pond and the closed photobioreactor, showed that algae productivity of the open pond system was higher than that of the closed photoreactor system (Pedroni et al 2004). It reveals that large-scale algae carbon dioxide fixation from flue gases is feasible; open pond algae cultivation systems are of the most potential for large scale algae cultivation.…”

Section: Application In Greenhouse Gas Emission Controlmentioning

confidence: 98%

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Carbon Capture and Storage

2015

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is a leading geoscientist of his generation, venture capitalist, and a significant figure in the politics of Colorado. In this article he reviews some inconvenient truths about the timely implementation of CCS projects in the US, some of which may resonate in other countries seeking CO 2 reduction measures.T he greatest challenge to carbon capture and storage (CCS) is likely to be economic rather than technical. A September 2008 McKinsey report estimated that the first commercial scale CCS projects, potentially to be built soon after 2020, would cost €35-50 per metric ton of CO 2 abated. They assume that if 500+ projects were built by 2030, the cost might fall to €25-40 per ton. About two-thirds of that cost is for CO 2 capture.It is interesting to consider those costs on a global scale. A study by Pacala and Socolow implies that we need to cut a cumulative 25 Gton of CO 2 over the next 50 years just to cap the CO 2 concentration in the atmosphere at a modest 500 ppm (we are now at 390 ppm). If all of our solutions cost €25 per ton, the economic impact would be €625 billion ($833 billion) over the next 50 years.Reducing CO 2 is a global issue, but the US creates 20% of the problem. It also offers an interesting case study on the difficulty of finding practical solutions in a challenging political and economic environment. Hopefully along the way the reader will discover opportunities as well as pitfalls to avoid.According to the US Department of Energy's Energy Information Administration (DOE-EIA), 98% of America's human-generated CO 2 comes from energy use, with 40% of that from electricity (coal and natural gas) and 33% from transportation (mostly petroleum). Coal produces 45% of America's electricity and natural gas produces 23% (see Figure 1).McKinsey's study notes that 'Retrofitting of existing power plants is likely to be more expensive than new installations, and economically feasible only for relatively new plants (with high efficiencies).' But according to the DOE-EIA, over the past 20 years coal contributed only 3.7% of total added US capacity while natural gas accounted for 88%. Few modern, efficient US coal plants have been added in the past 20 years.'Efficiency' is a term used to define the conversion of the theoretical energy content of a fuel into electricity. The McKinsey report notes that the energy required for the CCS CO 2 capture process increases the amount of coal that must be burned per MW-hour delivered, and estimates a CCS 'efficiency penalty' of 10%. This means that if a future coal plant could be built to achieve a 50% thermal efficiency, CCS would decrease that efficiency to 40%. Such a plant would be burning 50/40=1.25 times as much coal per MW-hour. And burning 25% more coal would also increase harmful emissions since CCS captures only about 90% of CO 2 and none of the other pollutants.CCS also faces storage challenges, such as site selection, CO 2 transportation costs, pipeline and CCS site permits, and uncertainties in monitoring CO 2 sequestration. Leakage of just 0.5% per year w...

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Section: Algae Strains Effectmentioning

confidence: 95%

Section: Application In Greenhouse Gas Emission Controlmentioning

confidence: 98%

Carbon Capture and Storage

2015

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“…Some of these systems have been used to cultivate Tetraselmis spp. (Tredici et al, 1996;Borowitzka, 1997;Pedroni et al, 2004;Chini Zittelli et al, 2006), and several species also have been grown on an industrial scale under heterotrophic conditions with yields in excess of 100 g/L per day (Day et al, 1991). Tetraselmis spp.…”

Section: Introductionmentioning

confidence: 98%

Effect of the Inclusion of DriedTetraselmis suecicaon Growth, Feed Utilization, and Fillet Composition of European Sea Bass Juveniles Fed Organic Diets

Tulli

Zittelli

Giorgi

et al. 2012

Journal of Aquatic Food Product Technology

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“…Biomass productivity was determined based on the ash‐free dry weight (AFDW) (g). The AFDW was used to calculate the areal productivity, which was determined by subtracting biomass concentration (g l −1 ) from that of the previous measured time point, multiplied by the reactor volume, and divided by the surface area and the number of days from the last AFDW measurement, expressed as g m −2 day −1 (Pedroni et al ., 2004). A subset of replicated experiments were sampled twice daily for bacterial 16S rRNA gene analysis to establish a baseline of typical phycosphere development at the RAFT experiment site.…”

Section: Methodsmentioning

confidence: 99%

Association between algal productivity and phycosphere composition in an outdoor Chlorella sorokiniana reactor based on multiple longitudinal analyses

Steichen

Gao

Waller

et al. 2020

Microbial Biotechnology

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Microalgae as a biofuel source are of great interest. Bacterial phycosphere inhabitants of algal cultures are hypothesized to contribute to productivity. In this study, the bacterial composition of the Chlorella sorokiniana phycosphere was determined over several production cycles in different growing seasons by 16S rRNA gene sequencing and identification. The diversity of the phycosphere increased with time during each individual reactor run, based on Faith's phylogenetic diversity metric versus days post-inoculation (R = 0.66, P < 0.001). During summer months, Vampirovibrio chlorellavorus, an obligate predatory bacterium, was prevalent. Bacterial sequences assigned to the Rhizobiales, Betaproteobacteriales and Chitinophagales were positively associated with algal biomass productivity. Applications of the general biocide, benzalkonium chloride, to a subset of experiments intended to abate V. chlorellavorus appeared to temporarily suppress phycosphere bacterial growth, however, there was no relationship between those bacterial taxa suppressed by benzalkonium chloride and their association with algal productivity, based on multinomial model correlations. Algal health was approximated using a model-based metric, or the 'Health Index' that indicated a robust, positive relationship between C. sorokiniana fitness and presence of members belonging to the Burholderiaceae and Allorhizobium-Neorhizobium-Pararhizobium-Rhizobium clade. Bacterial community composition was linked to the efficiency of microalgal biomass production and algal health.

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Enitecnologie R&D project on microalgae biofixation of CO2Outdoor comparative tests of biomass productivity using flue gas CO2 from a NGCC power plant

Cited by 13 publications

References 4 publications

Carbon Capture and Storage

Carbon Capture and Storage

Effect of the Inclusion of DriedTetraselmis suecicaon Growth, Feed Utilization, and Fillet Composition of European Sea Bass Juveniles Fed Organic Diets

Association between algal productivity and phycosphere composition in an outdoor Chlorella sorokiniana reactor based on multiple longitudinal analyses

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